Boiler-tube scaler



Patented Apr. Z2, 1924.

UNITsD? ystares i STEPHEN SORENSEN, OF PORT RICHMONDfNEW'YORK.

' nonna-TUBE seALER.

i Application filed August 22, 1922.-Y Serial No. 583,614.

Scaler, of which the following is a full,

clear, and exact description. Y

This invention relates to aboiler 'tube sealer, and has for an object the provislon of a simple, strong, durable device which can be readily inserted and manipulated within the tubes of a boiler to easily and quickly remove deleterious' material from the inside and outside thereof.

Another object 4resides in the provision of means whereby a high-speed compressed air operated device is continually hammering the walls of the` tube into which the device is inserted, and inthe provision of means whereby the exhaust of the compressed air assists in the blowing out of the loosened material from the pipe or tube.

A 'further object resides in the particular construction and arrangement of parts which are hereinafter described and claimed and shown in the accompanying drawings.

The invention is illustrated in the drawings, of which- Figure 1 is a longitudinal section taken through a tube and the device.

Fig. 2 is a perspective view of the device.

Fig. 3 is a plan view with certain -parts in section.

The form of the invention shown in the drawings is a preferred form, although it is understood that modifications in the construction and arrangement of the parts and in the character of the materials used may be adopted without departing from the spirit of the invention. y

The invention contemplates the provision of a metallic head within which is formed a cylinder with a suitable inlet and exhaust port. Within this cylinder there is mounted a reciprocating plug having extensions adapted to extend from the ends of thecylinder and act as hammers to engage with the walls of the tnbeor pipe into which the head is inserted to knock deleterious material therefrom. This head and cylinder are attached to the end of a smaller pipe, which can be connected to a suitable source of operating iuid, such as compressed air, whereby the piston Within the @yutder is reciprocated at high speed and automatically "re.

verses at this speed.V The pipecarrying the compressed air may be usedl and man'ipuv` lated by hand to push the h'e'adinto the pipe and remove it therefrom" and lto turn it around while within the lpipeor tube.

Pari-:Nr "orricslfff To this end, the invention as illustrated" in the drawings shows a tube 1 'into which ai v pipe 2 is inserted. On the end of this pipo there is fastened a head 3 which hasv an integral sleeve 4 thereon having a threaded bore 5 into which the threaded end of thew pipe 2 is inserted.

The head 8 is provided with a' transversely disposed cylindrical space 7 within whicha piston 8 is adapted' to reciprocate. This piston is of a diameter smaller than that of the cylinder and is provided .with 'annular flanges 9 and`10 fitting snugly within the cylinder. vided with longitudinal extensions 11 and 12 which function as hammers to engage with the walls of the pipe or tube 1 as the piston Areciprocates at high speed under the influence of the propelling Huid, such as compressed air. These hammers extend respectively through apertures 13 and 14 formed in the end walls of the head at the end of the cylindrical space 7. Between the end walls of the head and the ends of the bore or cylindrical space 7 I provide spaces 15 and 16 cylindrical in formation but of larger diameter than that of the cylinder 7. Formed in the walls of the cylinder 7, midway of its length, I provide three annular grooves 17, 18 and 19, the middle one 18 of which is connected to the inlet port 20` leading from the pipe 2. In the walls of the cylinder 7, preferably opposite the inlet port 20, I provide two groups ofoutlet ports 21 and 22 arranged three in a group, although any other number can be provided.

The end walls of the head 3 are pref erably formed by placing over the head plates 23 and 24 preferably fastened thereto by any suitable means. .I also provide other outlet ports, such as 25 and 26, disposed in the walls of the cylinder at right angles to the outlet ports 21 and 22. Extending respectively from the groove 17 and the groove 19 to the chambers 15 and 16 are arranged a plurality of longitudinal grooves 27 as shown particularly in Fi 3.

These grooves provide passage for the uid` The ends ofthe piston are rvpro-l yfrom oneuside of the langes 9 and 10 to the other side v`tl`1e"r;if through the bp'r'tion of the piston.

In the operation of the device, assuming the piston in the position 'shown in Fig. 1, in the cylinder 7 fluid flows through uthe pipe 2 into the inlet port 20; it then passes' beneath the lower edger ofi; the flange 1Q, which is ever so slightly `spaced yfrom the loweredge Iofthe gro, vg 17128, andrenters the spacefbetxveein,the.two.ffliges 9 rend 10. Alt also: passesv iI,1,O,'the `lg'ro'ovej19 end i thence throughl the ,grooves Av$2.7` andl ythe space, l 'at the "endfof the pist-on and; vtherein irripfinges ageirjist[theA lower edge` rlface 'ofthefange 9,"forcing Vtliepisto'n upwardly. I As ,the ,pis-v mv'e ipwei'dly .fQm the 'POSitQn shown 'the lower ied'g'e eef lthe i `fille,1051?@"g,0i the X- hus exlifiiisti'g' the' air, from a gel 1,0 Psses,abre-"theglower,edgef tle" groove '17 itiope'nsthe Iidphagmber between the flange/s 9.` and: l0 to Jthe'"groeve A17 and (permits tli-f, airivfto., low "therefrom, into the 'upperfset' of, groove's?, whereby the air can llgw into the religen11ber ,15 in ,frontof the ,Hnge andtlierel)y cushion ,its force toward-theehd of i'tsfstrokfe. y Aslthe piston :w rehes'theotherend "of i'tsstokethe opera- Leere@ jcient, strong and durableudevice which can be t readily, inserted and manipulated I Within a tube toremove Athe boiler scale therefrom. 'Whetl da'imis: t vA device for removingd scale froinyboil'er tubes, which comprises e head to be disposed within the tube, said head having a cylinder therein, a reciprocatingupiston withinfsaid cylinder, and 'hainmerapprtionson opposite ends ,ofwsaid piston extending. ythrough the heaiduring the movement of 'the piston p0 engage` with the ,wa1l s of the tubeand remove the'Qscale therefrom,` the outer surfaces ofthe hedfrom which 4the hammer., portions extend beingflat to provideaclearance space between the head ,and the. curved. vielle Of the tube, in which Spfftl hamm@ iiQrtOn can move to achieve an effective blowontlie wallsof the tzbe.

:STEPHEN 2'so'RENSLN. 

